EP3081631A1 - Device for mixing the content of substrate containers - Google Patents

Device for mixing the content of substrate containers Download PDF

Info

Publication number
EP3081631A1
EP3081631A1 EP15001074.2A EP15001074A EP3081631A1 EP 3081631 A1 EP3081631 A1 EP 3081631A1 EP 15001074 A EP15001074 A EP 15001074A EP 3081631 A1 EP3081631 A1 EP 3081631A1
Authority
EP
European Patent Office
Prior art keywords
agitator
shaft
substrate container
substrate
stirring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15001074.2A
Other languages
German (de)
French (fr)
Other versions
EP3081631B1 (en
Inventor
Johann Hochreiter Biogas Planung Beratung GmbH BHKW
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP15001074.2A priority Critical patent/EP3081631B1/en
Publication of EP3081631A1 publication Critical patent/EP3081631A1/en
Application granted granted Critical
Publication of EP3081631B1 publication Critical patent/EP3081631B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C3/00—Treating manure; Manuring
    • A01C3/02—Storage places for manure, e.g. cisterns for liquid manure; Installations for fermenting manure
    • A01C3/026—Storage places for manure, e.g. cisterns for liquid manure; Installations for fermenting manure with mixing or agitating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/234—Surface aerating
    • B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/073—Stirrers characterised by their mounting on the shaft with stirring elements moving with respect to the stirrer shaft, e.g. floating or comprising contracting chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/61—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis about an inclined axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/41—Mounting or supporting stirrer shafts or stirrer units on receptacles
    • B01F35/412—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting both extremities of the shaft
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
    • C12M27/06—Stirrer or mobile mixing elements with horizontal or inclined stirrer shaft or axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/25—Mixers with both stirrer and drive unit submerged in the material being mixed

Definitions

  • the present invention relates to a device for mixing the contents of substrate containers according to the preamble of claim 1.
  • a stirring device for biogas digester shown and described, which can be easily removed or installed for maintenance or repair without changing the level and without significant disturbance of normal operation.
  • the stirring device is in a vertical shaft, which protrudes from above into the fermenter vessel and in the lower part has an outlet opening.
  • the outlet opening is slightly below the filling level, so that a gastight seal is formed.
  • the shaft with the stirring device can also be attached to the outside of the fermenter.
  • the stirrer comprises at least one drive and a wall-mounted stirrer shaft bearing fastened to the wall of the fermentation container, a further fermenter-side stirring shaft bearing resting on the ground and at least one stirring shaft with stirring blades.
  • the stirring shaft extends parallel to the bottom of the fermentation tank in the direction of the main axis of the fermentation tank.
  • the present invention is based on the object to provide a device for mixing the contents of substrate containers, especially in biogas plants, which has a high performance, is very well adapted to the changing conditions during operation of the biogas plant and in maintenance low disturbances of Operation caused. Not only a local turbulence of the content should be done, but the entire contents of the substrate container to be set in motion.
  • the advantages of the device according to the invention for biogas plants lie in their high performance, their stability, their ease of maintenance and their ability to move the entire contents of the substrate container in motion.
  • An apparatus for mixing the contents of substrate containers by means of an agitator is advantageous, in particular, if the substrate container comprises at least one circumferential wall and a bottom, and if the peripheral wall is oriented on a vertical main axis, the agitator comprises a shaft which under a Incidentally extending from the vertical and horizontal mounting angle ( ⁇ ) protrudes into the substrate container, if further the agitator is connected to a buoyant body and depending on the liquid level in the substrate container in the longitudinal extent of the shaft on this slidably, but rotationally disposed, and if the agitator at least two stirring blades includes diametrically extending on both sides of the rotatable shaft and are alternately in the content of the substrate container during rotation or protrude from it.
  • ⁇ vertical and horizontal mounting angle
  • stirring blades are arranged above the buoyant body.
  • the shaft is designed in several parts and has a prismatic outer shell, and if the buoyancy body has a guide which receives the prismatic outer shell of the shaft.
  • a device is designed when the shaft of the agitator is supported on the bottom of the substrate container.
  • a device is advantageously constructed when the support of the shaft at the bottom of the substrate container by means of a bearing block takes place.
  • a device may also be advantageous if the shaft of the agitator penetrates the cover of the substrate container
  • a device is especially favorable designed when the substrate container is designed as a fermentation tank, Nachgär hereer, repository or the like.
  • peripheral wall of the substrate container in the plan view is circular ring-shaped.
  • a device is advantageous if the stirring blades extend into their end regions radially to the shaft have extending rectangular profile, the end portions opposite the extension direction of the rectangular profile, however, have angled portions.
  • FIG. 1 an open substrate container is shown, which is referred to in the following description as a fermentation tank 1 a biogas plant 2.
  • the content is to be mixed by a stirrer 3, which are arranged in this embodiment in a cylindrical fermentation tank 1.
  • a wall 4 of the fermentation container 1 is preferably thermally insulated and preferably made of concrete.
  • the upper boundary edge 5 of the fermentation container 1 has a reinforcing plate 6, by means of which a drive motor 7 for a stirring shaft 8 - shielded in a gastight manner - is mounted on the fermentation container 1.
  • the agitator shaft 8 projects into the fermentation vessel 1 at an installation angle ⁇ deviating from the vertical and horizontal, and carries two agitating blades 9 and 10, which are mounted diametrically on the agitator shaft 8. At its end facing away from the drive motor 7, the agitator shaft 8 is supported in a bearing block 11, which is located at the bottom 12 of the fermentation tank 1.
  • the agitator shaft 8 is designed in several parts and consists of a driven by the drive motor 7 shaft 13 and a prismatic outer shell 14, which surrounds the shaft 13.
  • a buoyancy body 15 is mounted longitudinally displaceable.
  • the buoyant body 15 consists of a hollow cylindrical floating body 16 whose central longitudinal axis is realized by a guide 17 for the prismatic outer shell 14 of the agitator shaft 8.
  • the buoyancy of the float 16 is dimensioned to correspond to the liquid level 18 of the substrate 19 (see FIG. FIG. 2 ) follows. Since the stirring blades 9 and 10 are arranged above the floating body 16, it follows from this design that there is always one stirring blade 9 or 10 inside and the other outside the substrate 19. The consequence of this situation is a rhythmic immersion of the stirring blades 9 and 10 in the substrate 19, which leads to a formation of the substrate 19 in the fermentation container 1. This wave ultimately rotates within the fermentation tank 1 and thus the entire substrate 19 moves in the form of a wave through the fermentation tank 1.
  • FIG. 2 the agitator 3 is shown in side view.
  • identical or identically acting components are provided with the same reference numerals as in FIG. 1, to which reference is expressly made.
  • the stirring shaft 8 With the aid of the drive motor 7, the stirring shaft 8 is set in rotation and the stirring blades 9 and 10 move the substrate 19 (whose fluid level is shown here as line 18) in the fermentation tank 1 in motion.
  • the stirring blades 9 and 10 - as described above - dive more or less into the substrate 19.
  • the substrate 19 is not only fluidized locally on the propeller, but the entirety of the substrate 19 is rotated by the stirring blades 9 and 10 within the fermentation vessel 1 in rotation.
  • the stirring blades 9 and 10 have at their end portions 20, 21, 22 and 23 bends 24, 25, 26 and 27.
  • the stirring blades 9 and 10 are preferably made of sheet steel and bent prismatic, so that in the stirring direction - which corresponds to the direction of rotation of the stirring shaft 8 - each gives a prismatic profile 28 with the cross section of a ship's bow 29, whereby the forces are kept low during stirring in the substrate 19.
  • the angled portions 24, 25, 26 and 27 optimize the shape of the stirring blades 9 and 10 so that the effective areas of the stirring blades 9 and 10 are as close as possible to the edge portions of the fermentation tank 1, maintaining their stirring action in these areas because of the blade effect is stronger than in a propeller-like round-ended end of the stirring blades according to the prior art +. This applies both to the areas of the wall 4 and to the bottom 12 of the fermentation container 1.
  • FIG. 3 3 shows an agitator 3 in a variant in which the stirring blades 30 and 31 have the cross-section of a narrow blade 32.
  • the positioning above the float 16 and the orientation of the blades 32 to the longitudinal axis thereof is chosen so that the lowest possible immersion in the substrate 19 results.
  • the stirring blades 30 and 31 are designed differently, although the same movement of the waves of the substrate 19 as in the apparatus according to the FIG. 1 as well as the FIG. 2 is achieved.
  • FIG. 4 schematically the buoyancy body 15 is shown, which forms the float 16 as a cylindrical hollow body.
  • a guide 17 in which the prismatic - square here - outer shell 14 of the stirring shaft 8 is mounted longitudinally displaceable.
  • the longitudinal displacement allows the float 16 with his agitator 3 to follow the liquid level 18 of the substrate 19.
  • the prismatic design of the outer shell 14 and its torsional strength in the guide 17 causes the rotationally rigid entrainment of the agitator 3 on the agitator shaft 8. It is understood that the float can also be implemented as differently designed buoyancy body.
  • the agitator shaft 8 is shown with its essential details.
  • a core there is a shaft 13 on which a prismatic - here square - outer shell 14 is arranged.
  • On the outer shell there is at least one stop 33 which limits the float 16 in its axial movement.
  • Flanges 34 and 35 serve to attach the agitator shaft 8 on the drive motor 7 and the bearing block 11th

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Genetics & Genomics (AREA)
  • Microbiology (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Sustainable Development (AREA)
  • Soil Sciences (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Environmental Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung zum Durchmischen des Inhalts von Substratbehältern (1). In dem Substratbehälter (1) ist ein Rührwerk (3) installiert, dessen Rührschaufeln (9, 10) oberhalb eines Auftriebskörpers (15) angeordnet sind, wobei der Auftriebskörper (15) dem Flüssigkeitsniveau (18) des Substrats (19) im Substratbehälter (1) folgt. Die axiale Position des Rührwerks (3) auf der Rührwelle (8) ist somit abhängig von der Höhe des Flüssigkeitsniveaus (18) im Substratsbehälter (1). Bei Rotation des Rührwerks (3) wird durch das rhythmische wechselweise Ein- und Austauchen jeweils einer Rührschaufel (9, 10) eine rotierende Woge des Substrats (19) im Substratbehälter (1) erzeugen.The invention relates to a device for mixing the contents of substrate containers (1). In the substrate container (1), an agitator (3) is installed, the stirring blades (9, 10) are arranged above a buoyant body (15), wherein the buoyant body (15) the liquid level (18) of the substrate (19) in the substrate container (1 ) follows. The axial position of the agitator (3) on the agitator shaft (8) is thus dependent on the height of the liquid level (18) in the substrate container (1). Upon rotation of the agitator (3), a rotating wave of the substrate (19) in the substrate container (1) will be generated by the rhythmic alternately immersion and withdrawal of a respective stirring blade (9, 10).

Description

Die vorliegende Erfindung bezieht sich auf eine Vorrichtung zum Durchmischen des Inhalts von Substratbehältern gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a device for mixing the contents of substrate containers according to the preamble of claim 1.

Rührwerke für Biogasanlagen sind bereits bekannt. So ist in der DE 102 60 972 B4 eine Vorrichtung zum Durchmischen von Flüssigmist in einem senkrecht stehenden Vorratsbehälter beschrieben, die sich dadurch auszeichnet, dass eine Welle mit Rührelementen radial in den senkrecht stehenden, zylindrischen Vorratsbehälter hineinragt, mittels einer Antriebsvorrichtung drehbar ist und dass die Rührelemente als schaufelförmige Paddel so ausgebildet sind, dass sie in bestimmten Rotationspositionen einen Durchbruch in einer Abdeckung des Vorratsbehälters durchragen, und dass der Durchbruch mittels einer Haube hermetisch verschließbar ist.Agitators for biogas plants are already known. So is in the DE 102 60 972 B4 a device for mixing liquid manure in a vertical reservoir described, which is characterized in that a shaft with stirring elements protrudes radially into the vertical, cylindrical reservoir, is rotatable by means of a drive device and that the stirring elements are designed as paddle-shaped paddle so that they protrude in certain rotational positions a breakthrough in a cover of the reservoir, and that the breakthrough is hermetically sealed by a hood.

Ferner ist in der DE 10 2008 006 813 A1 eine Rührvorrichtung für Biogasfermenter gezeigt und beschrieben, die zur Wartung oder Reparatur problemlos ohne Veränderung des Füllstands und ohne wesentliche Störung des normalen Betriebsablaufs aus- bzw. eingebaut werden kann. Dazu befindet sich die Rührvorrichtung in einem senkrecht stehenden Schacht, der von oben her in den Fermenterkessel hineinragt und im unteren Teil eine Austrittsöffnung hat. Die Austrittsöffnung liegt dabei etwas unterhalb der Füllstandshöhe, so dass ein gasdichter Abschluss entsteht. Der Schacht mit der Rührvorrichtung kann auch an der Außenseite des Fermenters angebracht sein.Furthermore, in the DE 10 2008 006 813 A1 a stirring device for biogas digester shown and described, which can be easily removed or installed for maintenance or repair without changing the level and without significant disturbance of normal operation. For this purpose, the stirring device is in a vertical shaft, which protrudes from above into the fermenter vessel and in the lower part has an outlet opening. The outlet opening is slightly below the filling level, so that a gastight seal is formed. The shaft with the stirring device can also be attached to the outside of the fermenter.

Außerdem ist eine Biogasanlage mit einem Rührwerk aus der DE 20 2006 004 982 U1 bekannt. Dort umfasst das Rührwerk zumindest einen Antrieb und ein an der Wand des Fermentationsbehälters befestigtes wandseitiges Rührwellenlager, ein weiteres, sich am Boden abstützendes fermenterseitiges Rührwellenlager und zumindest eine Rührwelle mit Rührblättern. Dabei erstreckt sich die Rührwelle parallel zum Boden des Fermentationsbehälters in Richtung der Hauptachse des Fermentationsbehälters.In addition, a biogas plant with a stirrer from the DE 20 2006 004 982 U1 known. There, the stirrer comprises at least one drive and a wall-mounted stirrer shaft bearing fastened to the wall of the fermentation container, a further fermenter-side stirring shaft bearing resting on the ground and at least one stirring shaft with stirring blades. In this case, the stirring shaft extends parallel to the bottom of the fermentation tank in the direction of the main axis of the fermentation tank.

Außerdem ist aus der DE 20 2006 020 195 U1 ein Rührwerk für einen Fermenter bekannt, bei dem mehrere vertikal angeordnete Rührwellen Rührpaddel tragen und über einen Antriebsmechanismus zum Antrieb der Rührwellen verfügen. Am Boden des Fermenters befinden sich Zentrierlager zum zentrieren der vertikal angeordneten Rührwellen.Moreover, from the DE 20 2006 020 195 U1 an agitator for a fermenter, in which a plurality of vertically arranged stirrer shafts carry stirring paddles and have a drive mechanism for driving the stirrer shafts. At the bottom of the fermenter are centering for centering the vertically arranged stirrer shafts.

In der DE 20 2004 012 236 U1 ist ein Rührwerk für Biogasfermenter gezeigt und beschrieben, bei dem ein schräg ins innere des Fermentationsbehälters ragendes Rührwerk zwei Rührschaufeln auf seiner Rührwelle trägt. Die Rührschaufeln sind Propellerartig ausgebildet und in gleicher Ausrichtung auf der Rührwelle positioniert. Ihre Rotationskreise überschneiden sich in Bezug auf das Flüssigkeitsniveau im Fermentationsbehälter nicht. Kern des dort beschriebenen Gegenstands ist die speziell ausgestaltete Fermenterseitige Lagerkonsole.In the DE 20 2004 012 236 U1 An agitator for biogas fermenters is shown and described in which an obliquely projecting into the interior of the fermentation tank agitator carries two stirring blades on its stirrer shaft. The stirring blades are designed like a propeller and positioned in the same orientation on the stirrer shaft. Their rotation circles do not overlap with respect to the liquid level in the fermentation tank. The core of the item described there is the specially designed fermenter-side storage console.

In der DE 83 128 09 U1 ist ein Rührwerk für einen Fermenter gezeigt und beschrieben, bei dem an einer schräg in den Fermenter eingebauten Rührwelle zwei Rührer in übereinander liegenden Ebenen vorgesehen sind, von denen der obere Rührer an einem Schwimmer angeordnet ist. Die Rührer haben propellerartige Rührflügel, die eine Strömung entlang der Längsachse der Rührwelle erzeugen. Die Anordnung der Rührer ist so gewählt, dass die Rührflügel die Oberfläche der zu durchmischenden Gülle nicht durchbrechen. Die Rührflügel sind bei dieser Vorrichtung propellerartig ausgebildet und weisen ein tragflächenartiges Profil auf. Die so erzeugbare Strömung ist als im Wesentlichen lokaler Mischvorgang, also als Verwirbelung anzusehen.In the DE 83 128 09 U1 An agitator for a fermenter is shown and described in which two stirrers are provided in superimposed planes at an obliquely installed in the fermenter stirrer shaft, of which the upper stirrer is arranged on a float. The stirrers have propeller-like impellers which create a flow along the longitudinal axis of the stirrer shaft. The arrangement of the stirrer is chosen so that the stirring blades do not break the surface of the manure to be mixed. The impellers are formed in this device propeller-like and have a wing-like profile. The flow that can be generated in this way is to be regarded as a substantially local mixing process, that is to say as turbulence.

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Vorrichtung zum Durchmischen des Inhalts von Substratbehältern, insbesondere bei Biogasanlagen zu schaffen, die über eine hohe Leistungsfähigkeit verfügt, sehr gut an die wechselnden Bedingungen beim Betrieb der Biogasanlage anpassbar ist und bei der Wartung geringe Störungen des Betriebs verursacht. Dabei soll nicht nur eine örtliche Verwirbelung des Inhalts erfolgen, sondern der gesamte Inhalt des Substratbehälters soll in Bewegung gebracht werden.The present invention is based on the object to provide a device for mixing the contents of substrate containers, especially in biogas plants, which has a high performance, is very well adapted to the changing conditions during operation of the biogas plant and in maintenance low disturbances of Operation caused. Not only a local turbulence of the content should be done, but the entire contents of the substrate container to be set in motion.

Diese Ausgabe wird von einer Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Vorrichtung sind den abhängigen Ansprüchen zu entnehmen.This output is achieved by a device having the features of claim 1. Advantageous embodiments of the device can be found in the dependent claims.

Die Vorteile der erfindungsgemäßen Vorrichtung für Biogasanlagen liegen in ihrer großen Leistungsfähigkeit, ihrer Stabilität, ihrer Wartungsfreundlichkeit und ihrer Fähigkeit, den gesamten Inhalt des Substratbehälters in Bewegung zu versetzen.The advantages of the device according to the invention for biogas plants lie in their high performance, their stability, their ease of maintenance and their ability to move the entire contents of the substrate container in motion.

Vorteilhaft ist eine Vorrichtung zum Durchmischen des Inhalts von Substratbehältern mittels eines Rührwerks vor allem dann, wenn der Substratbehälter zumindest eine umlaufende Wand sowie einen Boden umfasst, und wenn sich die umlaufende Wand an einer vertikalen Hauptachse orientiert, das Rührwerk eine Welle umfasst, die unter einem von der Vertikalen und Horizontalen abweichenden Einbauwinkel (α) in den Substratbehälter hineinragt, wenn ferner das Rührwerk mit einem Auftriebskörper verbunden ist und abhängig vom Flüssigkeitsniveau im Substratbehälter in Längserstreckung der Welle auf dieser verschiebbar, aber verdrehfest angeordnet ist, und wenn das Rührwerk wenigstens zwei Rührschaufeln umfasst, die sich diametral beidseits der drehbaren Welle erstrecken und sich während der Drehung wechselweise in dem Inhalt des Substratbehälters befinden bzw. aus ihm herausragen.An apparatus for mixing the contents of substrate containers by means of an agitator is advantageous, in particular, if the substrate container comprises at least one circumferential wall and a bottom, and if the peripheral wall is oriented on a vertical main axis, the agitator comprises a shaft which under a Incidentally extending from the vertical and horizontal mounting angle (α) protrudes into the substrate container, if further the agitator is connected to a buoyant body and depending on the liquid level in the substrate container in the longitudinal extent of the shaft on this slidably, but rotationally disposed, and if the agitator at least two stirring blades includes diametrically extending on both sides of the rotatable shaft and are alternately in the content of the substrate container during rotation or protrude from it.

Dabei ist es besonders vorteilhaft, wenn die Rührschaufeln oberhalb des Auftriebskörpers angeordnet sind.It is particularly advantageous if the stirring blades are arranged above the buoyant body.

Bei der erfindungsgemäßen Vorrichtung ist es außerdem vorteilhaft, wenn die Welle mehrteilig ausgebildet ist und eine prismatische Außenhülle aufweist, und wenn der Auftriebskörper über eine Führung verfügt, welche die prismatische Außenhülle der Welle aufnimmt.In the device according to the invention, it is also advantageous if the shaft is designed in several parts and has a prismatic outer shell, and if the buoyancy body has a guide which receives the prismatic outer shell of the shaft.

Günstig ist eine Vorrichtung gestaltet, wenn die Welle des Rührwerks am Boden des Substratbehälters abgestützt ist.Conveniently, a device is designed when the shaft of the agitator is supported on the bottom of the substrate container.

Eine Vorrichtung ist dann vorteilhaft aufgebaut, wenn die Abstützung der Welle am Boden des Substratbehälters mit Hilfe eines Lagerbocks erfolgt.A device is advantageously constructed when the support of the shaft at the bottom of the substrate container by means of a bearing block takes place.

Günstig gestaltet ist eine Vorrichtung auch dann, wenn die Welle des Rührwerks die Wand des Substratbehälters durchdringt.Conveniently designed is a device even when the shaft of the agitator penetrates the wall of the substrate container.

Außerdem kann eine Vorrichtung auch dann vorteilhaft sein, wenn die Welle des Rührwerks die Abdeckung des Substratbehälters durchdringtIn addition, a device may also be advantageous if the shaft of the agitator penetrates the cover of the substrate container

Eine Vorrichtung ist vor allem dann günstig ausgestaltet, wenn der Substratbehälter als Fermentationsbehälter, Nachgärbehälter, Endlager oder dergleichen ausgebildet ist.A device is especially favorable designed when the substrate container is designed as a fermentation tank, Nachgärbehälter, repository or the like.

Vorteilhaft ist es bei einer Vorrichtung, wenn der Substratbehälter eine gasdichte Abdeckung aufweist.It is advantageous in a device when the substrate container has a gas-tight cover.

Besonders vorteilhaft ist es bei einer Vorrichtung wenn die umlaufende Wand des Substratbehälters in der Draufsicht Kreisringförmig ist.It is particularly advantageous in a device when the peripheral wall of the substrate container in the plan view is circular ring-shaped.

Außerdem ist eine Vorrichtung von Vorteil, wenn die Rührschaufeln bis in ihre Endbereiche ein sich radial zur Welle erstreckendes Rechteckprofil aufweisen, die Endbereiche gegenüber der Erstreckungsrichtung des Rechteckprofils jedoch Abwinklungen aufweisen.In addition, a device is advantageous if the stirring blades extend into their end regions radially to the shaft have extending rectangular profile, the end portions opposite the extension direction of the rectangular profile, however, have angled portions.

Mit Hilfe eines Ausführungsbeispiels soll die Erfindung anhand der Zeichnungen noch näher erläutert werden.With the help of an embodiment, the invention will be explained in more detail with reference to the drawings.

Es zeigt

  • Figur 1 eine Schräg- Teilansicht eines offenen Substratbehälters einer Biogasanlage mit erfindungsgemäßem Rührwerk;
  • Figur 2 ein Substratbehälter mit Rührwerk in Seitenansicht;
  • Figur 3 eine Variante des Rührwerks gemäß der Erfindung;
  • Figur 4 eine Einzelheit eines Auftriebskörpers und
  • Figur 5 eine Rührwelle als Einzelheit.
It shows
  • FIG. 1 a diagonal partial view of an open substrate container of a biogas plant with inventive agitator;
  • FIG. 2 a substrate container with stirrer in side view;
  • FIG. 3 a variant of the agitator according to the invention;
  • FIG. 4 a detail of a buoyant body and
  • FIG. 5 a stirrer shaft as a detail.

In Figur 1 ist ein offener Substratbehälter gezeigt, der in der folgenden Beschreibung als Fermentationsbehälter 1 einer Biogasanlage 2 bezeichnet wird. Der nicht dargestellte Inhalt soll von einem Rührwerk 3 durchgemischt werden, welches bei diesem Ausführungsbeispiel in einem zylindrischen Fermentationsbehälters 1 angeordnet sind. Eine Wand 4 des Fermentationsbehälters 1 ist vorzugsweise thermisch isoliert und vorzugsweise aus Beton gefertigt. Der obere Begrenzungsrand 5 des Fermentationsbehälters 1 weist eine Verstärkungsplatte 6 auf, mittels der ein Antriebsmotor 7 für eine Rührwelle 8 - gasdicht abgeschirmt - an dem Fermentationsbehälter 1 gelagert ist. Die Rührwelle 8 ragt unter einem von der Vertikalen und Horizontalen abweichenden Einbauwinkel α in den Fermentationsbehälter 1 hinein und trägt zwei Rührschaufeln 9 und 10, welche diametral an der Rührwelle 8 montiert sind. An ihrem dem Antriebsmotor 7 abgewandten Ende ist die Rührwelle 8 in einem Lagerbock 11 abgestützt, der sich am Boden 12 des Fermentationsbehälters 1 befindet. Die Rührwelle 8 ist mehrteilig ausgeführt und besteht aus einer vom Antriebsmotor 7 angetriebenen Welle 13 und einer prismatischen Außenhülle 14, welche die Welle 13 umgibt. Auf der prismatischen Außenhülle 14 ist ein Auftriebskörper 15 längsverschieblich gelagert. Der Auftriebskörper 15 besteht aus einem hohlen, zylindrischen Schwimmkörper 16, dessen zentrale Längsachse durch eine Führung 17 für die prismatische Außenhülle 14 der Rührwelle 8 realisiert ist. Der Auftrieb des Schwimmkörpers 16 ist so bemessen, dass er dem Flüssigkeitsniveau 18 des Substrats 19 (s. Figur 2) folgt. Da die Rührschaufeln 9 und 10 oberhalb des Schwimmkörpers 16 angeordnet sind, ergibt sich aus dieser Bauweise, dass sich immer eine Rührschaufel 9 oder 10 innerhalb und die andere außerhalb des Substrats 19 befindet. Die Folge dieser Gegebenheit ist ein rhythmisches Eintauchen der Rührschaufeln 9 und 10 in das Substrat 19, was zu einer Wogenbildung des Substrats 19 im Fermentationsbehälter 1 führt. Diese Woge rotiert letztlich innerhalb des Fermentationsbehälters 1 und so bewegt sich das gesamte Substrat 19 in Form einer Woge durch den Fermentationsbehälter 1.In FIG. 1 an open substrate container is shown, which is referred to in the following description as a fermentation tank 1 a biogas plant 2. The content, not shown, is to be mixed by a stirrer 3, which are arranged in this embodiment in a cylindrical fermentation tank 1. A wall 4 of the fermentation container 1 is preferably thermally insulated and preferably made of concrete. The upper boundary edge 5 of the fermentation container 1 has a reinforcing plate 6, by means of which a drive motor 7 for a stirring shaft 8 - shielded in a gastight manner - is mounted on the fermentation container 1. The agitator shaft 8 projects into the fermentation vessel 1 at an installation angle α deviating from the vertical and horizontal, and carries two agitating blades 9 and 10, which are mounted diametrically on the agitator shaft 8. At its end facing away from the drive motor 7, the agitator shaft 8 is supported in a bearing block 11, which is located at the bottom 12 of the fermentation tank 1. The agitator shaft 8 is designed in several parts and consists of a driven by the drive motor 7 shaft 13 and a prismatic outer shell 14, which surrounds the shaft 13. On the prismatic outer shell 14, a buoyancy body 15 is mounted longitudinally displaceable. The buoyant body 15 consists of a hollow cylindrical floating body 16 whose central longitudinal axis is realized by a guide 17 for the prismatic outer shell 14 of the agitator shaft 8. The buoyancy of the float 16 is dimensioned to correspond to the liquid level 18 of the substrate 19 (see FIG. FIG. 2 ) follows. Since the stirring blades 9 and 10 are arranged above the floating body 16, it follows from this design that there is always one stirring blade 9 or 10 inside and the other outside the substrate 19. The consequence of this situation is a rhythmic immersion of the stirring blades 9 and 10 in the substrate 19, which leads to a formation of the substrate 19 in the fermentation container 1. This wave ultimately rotates within the fermentation tank 1 and thus the entire substrate 19 moves in the form of a wave through the fermentation tank 1.

In Figur 2 ist das Rührwerk 3 in Seitenansicht gezeigt. Um Wiederholungen zu vermeiden sind gleiche oder gleich wirkende Bauteile mit den gleichen Bezugszeichen versehen, wie in Figur 1, auf die ausdrücklich Bezug genommen wird. Mit Hilfe des Antriebsmotors 7 wird die Rührwelle 8 in Rotation versetzt und die Rührschaufeln 9 und 10 versetzen das im Fermentationsbehälter 1 befindliche Substrat 19 (dessen Flüssigkeitsniveau hier als Linie 18 dargestellt ist) in Bewegung. Je nach Füllstand des Fermentationsbehälters 1 tauchen die Rührschaufeln 9 und 10 - wie vorbeschrieben - dabei mehr oder weniger in das Substrat 19 ein. Gegenüber dem aus dem Stand der Technik bekannten Propeller-Rührwerken wird das Substrat 19 nicht nur örtlich am Propeller verwirbelt, sondern die Gesamtheit des Substrats 19 wird durch die Rührschaufeln 9 und 10 innerhalb des Fermentationsbehälters 1 in Rotation versetzt. Es ist ersichtlich, dass die Rührschaufeln 9 und 10 an ihren Endbereichen 20, 21, 22 und 23 Abwinklungen 24, 25, 26 und 27 aufweisen. Die Rührschaufeln 9 und 10 sind bevorzugt aus Stahlblech hergestellt und prismatisch abgekantet, so dass sich in Rührrichtung - die der Drehrichtung der Rührwelle 8 entspricht - jeweils ein prismatisches Profil 28 mit dem Querschnitt eines Schiffsbugs 29 ergibt, wodurch beim Rühren im Substrat 19 die Kräfte gering gehalten werden. Die Abwinklungen 24, 25, 26 und 27 optimieren die Form der Rührschaufeln 9 und 10 dahingehend, dass die wirksamen Flächen der Rührschaufeln 9 und 10 möglichst nahe an die Randbereiche des Fermentationsbehälters 1 heranreichen, wobei sie in diesen Bereichen ihre Rührwirkung beibehalten, weil der Schaufeleffekt stärker ist, als bei einem Propellerartig rund auslaufenden Ende der Rührschaufeln gemäß dem Stand der Technik+. Dies gilt sowohl für die Bereiche der Wand 4 als auch für den Boden 12 des Fermentationsbehälters 1.In FIG. 2 the agitator 3 is shown in side view. To avoid repetition, identical or identically acting components are provided with the same reference numerals as in FIG. 1, to which reference is expressly made. With the aid of the drive motor 7, the stirring shaft 8 is set in rotation and the stirring blades 9 and 10 move the substrate 19 (whose fluid level is shown here as line 18) in the fermentation tank 1 in motion. Depending on the level of the fermentation container 1, the stirring blades 9 and 10 - as described above - dive more or less into the substrate 19. Compared with the propeller agitators known from the prior art, the substrate 19 is not only fluidized locally on the propeller, but the entirety of the substrate 19 is rotated by the stirring blades 9 and 10 within the fermentation vessel 1 in rotation. It can be seen that the stirring blades 9 and 10 have at their end portions 20, 21, 22 and 23 bends 24, 25, 26 and 27. The stirring blades 9 and 10 are preferably made of sheet steel and bent prismatic, so that in the stirring direction - which corresponds to the direction of rotation of the stirring shaft 8 - each gives a prismatic profile 28 with the cross section of a ship's bow 29, whereby the forces are kept low during stirring in the substrate 19. The angled portions 24, 25, 26 and 27 optimize the shape of the stirring blades 9 and 10 so that the effective areas of the stirring blades 9 and 10 are as close as possible to the edge portions of the fermentation tank 1, maintaining their stirring action in these areas because of the blade effect is stronger than in a propeller-like round-ended end of the stirring blades according to the prior art +. This applies both to the areas of the wall 4 and to the bottom 12 of the fermentation container 1.

In Figur 3 ist ein Rührwerk 3 in einer Variante dargestellt, bei der die Rührschaufeln 30 und 31 den Querschnitt einer schmalen Klinge 32 aufweisen. Die Positionierung oberhalb des Schwimmkörpers 16 und die Ausrichtung der Klingen 32 zu dessen Längsachse ist so gewählt, dass sich ein möglichst widerstandarmes Eintauchen in das Substrat 19 ergibt. Gegenüber der Darstellungen in den Figuren 1 und 2 sind also die Rührschaufeln 30 und 31 anders ausgestaltet obwohl die gleiche Wogenbewegung des Substrats 19 wie bei der Vorrichtung gemäß der Figur 1 als auch der Figur 2 erzielt wird.In FIG. 3 3 shows an agitator 3 in a variant in which the stirring blades 30 and 31 have the cross-section of a narrow blade 32. The positioning above the float 16 and the orientation of the blades 32 to the longitudinal axis thereof is chosen so that the lowest possible immersion in the substrate 19 results. Compared to the representations in the FIGS. 1 and 2 Thus, the stirring blades 30 and 31 are designed differently, although the same movement of the waves of the substrate 19 as in the apparatus according to the FIG. 1 as well as the FIG. 2 is achieved.

Durch die erfindungsgemäße Ausbildung der Rührwerke und deren Wirksamkeit im Oberflächenbereich der Güllefüllung ist auch bei sich ändernder Füllhöhe - also in der Region des Flüssigkeitsniveaus - gewährleistet, dass die Bildung von Schwimmdecken verhindert wird.The inventive design of the stirrers and their effectiveness in the surface area of the slurry filling is guaranteed even with changing filling level - ie in the region of the liquid level - that the formation of floating ceilings is prevented.

In Figur 4 ist schematisch der Auftriebskörper 15 dargestellt, der als zylindrischer Hohlkörper den Schwimmkörper 16 bildet. In seiner Längsachse befindet sich eine Führung 17, in welcher die prismatische - hier quadratische - Außenhülle 14 der Rührwelle 8 längsverschieblich gelagert ist. Die Längsverschieblichkeit ermöglicht dem Schwimmkörper 16 mit seinem Rührwerk 3 dem Flüssigkeitsniveau 18 des Substrats 19 zu folgen. Die prismatische Ausführung der Außenhülle 14 und deren Verdrehfestigkeit in der Führung 17 bewirkt die drehsteife Mitnahme des Rührwerks 3 auf der Rührwelle 8. Es versteht sich, dass der Schwimmkörper auch als anders ausgestalteter Auftriebskörper realisiert sein kann.In FIG. 4 schematically the buoyancy body 15 is shown, which forms the float 16 as a cylindrical hollow body. In its longitudinal axis is a guide 17, in which the prismatic - square here - outer shell 14 of the stirring shaft 8 is mounted longitudinally displaceable. The longitudinal displacement allows the float 16 with his agitator 3 to follow the liquid level 18 of the substrate 19. The prismatic design of the outer shell 14 and its torsional strength in the guide 17 causes the rotationally rigid entrainment of the agitator 3 on the agitator shaft 8. It is understood that the float can also be implemented as differently designed buoyancy body.

In Figur 5 ist schließlich die Rührwelle 8 mit ihren wesentlichen Details dargestellt. Als Kern ist eine Welle 13 vorhanden, auf welcher eine prismatische - hier quadratische - Außenhülle 14 angeordnet ist. An der Außenhülle befindet sich wenigstens ein Anschlag 33, der den Schwimmkörper 16 in seiner axialen Bewegung begrenzt. Flansche 34 und 35 dienen zur Befestigung der Rührwelle 8 am Antriebsmotor 7 und am Lagerbock 11.In FIG. 5 finally, the agitator shaft 8 is shown with its essential details. As a core, there is a shaft 13 on which a prismatic - here square - outer shell 14 is arranged. On the outer shell there is at least one stop 33 which limits the float 16 in its axial movement. Flanges 34 and 35 serve to attach the agitator shaft 8 on the drive motor 7 and the bearing block 11th

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Fermentationsbehälter (Substratbehälter).Fermentation tank (substrate container).
22
Biogasanlagebiogas plant
33
Rührwerkagitator
44
Wandwall
55
Oberer BegrenzungsrandUpper bound edge
66
Verstärkungsplattereinforcing plate
77
Antriebsmotordrive motor
88th
Rührwelleagitator shaft
99
Rührschaufelpaddle
1010
Rührschaufelpaddle
1111
Lagerbockbearing block
1212
Bodenground
1313
Wellewave
1414
Außenhülleouter shell
1515
Auftriebskörperbuoyancy
1616
Schwimmkörperfloat
1717
Führungguide
1818
Flüssigkeitsniveauliquid level
1919
Substratsubstratum
2020
Endbereichend
2121
Endbereichend
2222
Endbereichend
2323
Endbereichend
2424
Abwinklungangling
2525
Abwinklungangling
2626
Abwinklungangling
2727
Abwinklungangling
2828
Profilprofile
2929
SchiffsbugShip's Bow
3030
Rührschaufelpaddle
3131
Rührschaufelpaddle
3232
Klingeblade
3333
Anschlagattack
3434
Flanschflange
3535
Flanschflange

Claims (12)

Vorrichtung zum Durchmischen des Inhalts von Substratbehältern (1) mittels eines Rührwerks (3), bei der der Substratbehälter (1) zumindest eine umlaufende Wand (4) und einen Boden (12) umfasst, wobei sich die umlaufende Wand (4) an einer vertikalen Hauptachse orientiert, und das Rührwerk (3) eine Rührwelle (8) umfasst, die unter einem von der Vertikalen und Horizontalen abweichenden Einbauwinkel (α) in den Substratbehälter (1) hineinragt, bei der das Rührwerk (3) mit einem Auftriebskörper (15) verbunden ist und abhängig vom Flüssigkeitsniveau (18) im Substratbehälter (1) in Längserstreckung der Rührwelle (8) auf dieser verschiebbar, aber verdrehfest angeordnet ist, dadurch gekennzeichnet, dass das Rührwerk (3) wenigstens zwei Rührschaufeln (9, 10; 30, 31) umfasst, die sich diametral beidseits der drehbaren Rührwelle (8) erstrecken und sich wechselweise in dem Inhalt des Substratbehälters (1) befinden bzw. aus ihm herausragen.Device for mixing the contents of substrate containers (1) by means of an agitator (3), wherein the substrate container (1) comprises at least one peripheral wall (4) and a bottom (12), wherein the peripheral wall (4) on a vertical Oriented main axis, and the agitator (3) comprises a stirring shaft (8) which protrudes at a different from the vertical and horizontal installation angle (α) in the substrate container (1), wherein the agitator (3) with a buoyant body (15) is connected and dependent on the liquid level (18) in the substrate container (1) in the longitudinal extent of the agitator shaft (8) on this slidably, but rotationally fixed, characterized in that the agitator (3) at least two stirring blades (9, 10, 30, 31 ) which extend diametrically on both sides of the rotatable agitator shaft (8) and are alternately in the contents of the substrate container (1) and protrude from it. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rührschaufeln (9, 10; 30, 31) oberhalb des Auftriebskörpers (15) angeordnet sind.Apparatus according to claim 1, characterized in that the stirring blades (9, 10; 30, 31) are arranged above the buoyant body (15). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rührschaufeln (9, 10) den Querschnitt eines Schiffsbugs (29) aufweisen.Apparatus according to claim 1, characterized in that the stirring blades (9, 10) have the cross section of a ship's bow (29). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rührschaufeln (30, 31) den Querschnitt einer Klinge (32) haben.Apparatus according to claim 1, characterized in that the stirring blades (30, 31) have the cross section of a blade (32). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rührwelle (8) mehrteilig aus einer Welle (13) mit einer prismatische Außenhülle (14) gebildet ist, und dass der Auftriebskörper (15) über eine Führung (17) verfügt, welche die prismatische Außenhülle (14) der Welle (13) aufnimmt.Apparatus according to claim 1, characterized in that the agitator shaft (8) consists of several parts of a shaft (13) with a prismatic outer shell (14), and that the buoyant body (15) has a guide (17) which the prismatic outer shell (14) of the shaft (13) receives. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rührwelle (8) des Rührwerks (3) am Boden (12) des Substratbehälters (1) abgestützt ist.Apparatus according to claim 1, characterized in that the stirring shaft (8) of the agitator (3) on the bottom (12) of the substrate container (1) is supported. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Abstützung der Rührwelle (8) am Boden (12) des Substratbehälters (1) mit Hilfe eines Lagerbocks (11) erfolgt.Apparatus according to claim 6, characterized in that the support of the stirring shaft (8) at the bottom (12) of the substrate container (1) by means of a bearing block (11). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rührwelle (8) des Rührwerks (3) die Wand (4) des Substratbehälters (1) durchdringt.Apparatus according to claim 1, characterized in that the stirring shaft (8) of the agitator (3) penetrates the wall (4) of the substrate container (1). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rührwelle (8) des Rührwerks (3) eine nicht dargestellte Abdeckung des Substratbehälters (1) durchdringtApparatus according to claim 1, characterized in that the stirring shaft (8) of the agitator (3) penetrates a cover, not shown, of the substrate container (1) Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Substratbehälter (1) als Fermentationsbehälter, Nachgärbehälter, Endlager oder dergleichen ausgebildet ist.Apparatus according to claim 1, characterized in that the substrate container (1) is designed as a fermentation tank, Nachgärbehälter, repository or the like. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Substratbehälter (1) eine gasdichte Abdeckung aufweist.Apparatus according to claim 1, characterized in that the substrate container (1) has a gas-tight cover. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die umlaufende Wand (4) des Substratbehälters (1) in der Draufsicht Kreisringförmig ist.Apparatus according to claim 1, characterized in that the circumferential wall (4) of the substrate container (1) in the plan view is circular ring-shaped.
EP15001074.2A 2015-04-15 2015-04-15 Device for mixing the content of substrate containers Active EP3081631B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15001074.2A EP3081631B1 (en) 2015-04-15 2015-04-15 Device for mixing the content of substrate containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15001074.2A EP3081631B1 (en) 2015-04-15 2015-04-15 Device for mixing the content of substrate containers

Publications (2)

Publication Number Publication Date
EP3081631A1 true EP3081631A1 (en) 2016-10-19
EP3081631B1 EP3081631B1 (en) 2018-01-31

Family

ID=53189545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15001074.2A Active EP3081631B1 (en) 2015-04-15 2015-04-15 Device for mixing the content of substrate containers

Country Status (1)

Country Link
EP (1) EP3081631B1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161860B (en) * 1958-10-21 1964-01-30 Maskin Aktiebolaget Plavia Agitator for pulping up quickly settling suspensions
DE8312809U1 (en) 1983-10-20 Schaffer & Moser AG, Nottwil Stirrer
DE202004012236U1 (en) 2004-08-02 2004-11-25 Salomon, Eugen, Dipl.-Ing. (FH) Biogas fermenting reactor for e.g. animal slurry has detachable shaft and motor supported by bearing blocks top and bottom
DE202006000185U1 (en) * 2006-01-07 2006-04-20 Hochreiter, Johann Liquid mist/waste water circulating device in storage vessel, comprises camp devices, drive device, agitating sheet metal elements, half cylindrical cover and cap with trapezoidal halves welded gas-tightly with one another
DE202006004982U1 (en) 2006-03-27 2006-05-24 Schmack Biogas Ag Agitator for fermentation tank
DE202006020195U1 (en) 2005-09-02 2008-01-31 Agraferm Technologies Ag Agitator for a fermenter and fermenter
DE102008006813A1 (en) 2008-01-31 2009-08-06 Lehmann Maschinenbau Gmbh Agitating device for biogas fermenter, comprises shaft for arranging the device within the fermenter and guide plates attached for inlet and/or discharge opening of the shaft for influencing the flow direction of the stirred biomass
DE10260972B4 (en) 2002-12-24 2010-04-08 Johann Hochreiter Device for circulating liquid manure and wastewater in a storage container
DE202013006429U1 (en) * 2013-07-17 2013-08-08 BHKW Johann Hochreiter Biogas Planung Beratung GmbH Device for mixing the contents of substrate containers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8312809U1 (en) 1983-10-20 Schaffer & Moser AG, Nottwil Stirrer
DE1161860B (en) * 1958-10-21 1964-01-30 Maskin Aktiebolaget Plavia Agitator for pulping up quickly settling suspensions
DE10260972B4 (en) 2002-12-24 2010-04-08 Johann Hochreiter Device for circulating liquid manure and wastewater in a storage container
DE202004012236U1 (en) 2004-08-02 2004-11-25 Salomon, Eugen, Dipl.-Ing. (FH) Biogas fermenting reactor for e.g. animal slurry has detachable shaft and motor supported by bearing blocks top and bottom
DE202006020195U1 (en) 2005-09-02 2008-01-31 Agraferm Technologies Ag Agitator for a fermenter and fermenter
DE202006000185U1 (en) * 2006-01-07 2006-04-20 Hochreiter, Johann Liquid mist/waste water circulating device in storage vessel, comprises camp devices, drive device, agitating sheet metal elements, half cylindrical cover and cap with trapezoidal halves welded gas-tightly with one another
DE202006004982U1 (en) 2006-03-27 2006-05-24 Schmack Biogas Ag Agitator for fermentation tank
DE102008006813A1 (en) 2008-01-31 2009-08-06 Lehmann Maschinenbau Gmbh Agitating device for biogas fermenter, comprises shaft for arranging the device within the fermenter and guide plates attached for inlet and/or discharge opening of the shaft for influencing the flow direction of the stirred biomass
DE202013006429U1 (en) * 2013-07-17 2013-08-08 BHKW Johann Hochreiter Biogas Planung Beratung GmbH Device for mixing the contents of substrate containers

Also Published As

Publication number Publication date
EP3081631B1 (en) 2018-01-31

Similar Documents

Publication Publication Date Title
DE2329218A1 (en) FLOATING STIRRING DEVICE
DE69932115T2 (en) Agitator with vertical axis
DE1265137B (en) Agitator for aerating liquids
EP2826549B1 (en) Device for mixing the content of substrate containers
DE102009056967B4 (en) mixing device
EP3065852B1 (en) Agitator for mixing fluids
DE102006022651B3 (en) Container used as a disposable bio-reactor comprises a mixer made from parts of an inflatable structure formed as a mixer guiding structure and held in position by the guiding structure
DE3105765A1 (en) Fluid-stirring device
DE202013006429U1 (en) Device for mixing the contents of substrate containers
DE10260972B4 (en) Device for circulating liquid manure and wastewater in a storage container
EP3081631B1 (en) Device for mixing the content of substrate containers
DE202015002760U1 (en) Device for mixing the contents of substrate containers
DE60020839T2 (en) BALANCED SUBMERSED MIXER COUPLES FOR LIQUIDS
WO2019020835A1 (en) Method and devices for the intermixing, which is almost free of shearing forces, of a medium present in a container
DE2618838A1 (en) Gas introduction device for fluids - with aerator drive motor inside floating water tight cylinder
EP2659959B1 (en) Device for mixing the content of substrate containers
DE202007005884U1 (en) Container with flexible walls
DE2638739A1 (en) DEVICE FOR MIXING LIQUIDS IN A FERMENTATION KETTLE
DE2946884C2 (en) Device for generating biogas
CN211487380U (en) Stirring device for drilling mud
DE102012213990B4 (en) biogas reactor
DE20219943U1 (en) Slurry gas generator, for biogas generation, has mixer paddle blades at different angles along drive shaft
DE102006001066B3 (en) Agitator, useful for energizing a liquid manure circulation in a liquid manure storage vessel of biogas plant, comprises a shaft propelled by a drive device, and agitating elements formed as single-armed shovel and arranged on the shaft
DE1805932C3 (en) Device for moving the contents of a sludge digester
DE202006000185U1 (en) Liquid mist/waste water circulating device in storage vessel, comprises camp devices, drive device, agitating sheet metal elements, half cylindrical cover and cap with trapezoidal halves welded gas-tightly with one another

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20161108

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

INTG Intention to grant announced

Effective date: 20170823

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

DIN1 Information on inventor provided before grant (deleted)
RIN1 Information on inventor provided before grant (corrected)

Inventor name: HOCHREITER, JOHANN

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 967410

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502015002918

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180131

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180430

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180501

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180531

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180430

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180403

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502015002918

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180430

26N No opposition filed

Effective date: 20181102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180415

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180430

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20150415

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180131

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180131

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 967410

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200415

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20210706

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220415

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230201

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230418

Year of fee payment: 9